Welcome!

Everyone knows it. Pools affect us in a deep way. Everyone here at hydro+logic has had that magic refine us into lovers of the craft of creating these places of wonder. Our mission is to share our passion and knowledge with everyone else who feels as we do. Thank you for being here!

The Recirculation Systems and Filtration module was initially released earlier this summer for public comment but has been re-released to encourage further review and feedback.

Health issues related to waterborne diseases as well as exposure to chemicals associated with pool water are increasingly being documented. The Recirculation Systems and Filtration Module is a first step towards improving water quality at aquatic facilities and reducing associated health effects. The Recirculation Systems and Filtration Module contains design and construction requirements that are, unless otherwise specified, applicable only for new or modified construction. New and improved elements include:

More aggressive turnover times and more uniform standards for recirculation system design and operation.

Filter design and operation standards that will promote more effective and efficient filtration.

Requiring water replenishment to dilute out the dissolved contaminants that cannot be removed by pool filters.

Development of a long-term plan to use pool filters for pathogen removal in addition to water clarity in a multiple barrier system that would complement all disinfection processes.

Use of improved flow meters

MAHC Background:

The Model Aquatic Health Code (MAHC) effort began in February 2005 and the latest round of modules is being published for public comment. The MAHC will have a significant impact on the aquatic industry and we strongly encourage all industry members to take an active role in providing meaningful feedback to develop the best possible result.

The first industry standard was issued in 1958. In the subsequent 50 years, there have been at least 50 different state codes and many independent county codes. What was required in one jurisdiction may be illegal in another. It is clear that this historic approach is not working. Thus, the National Swimming Pool Foundation took a leadership position and provided funding to the Center for Disease Control (CDC) for the creation of the MAHC. The MAHC is intended to transform the patch work of industry codes into a data-driven, knowledge-based, risk reduction effort to prevent disease, injuries and promote healthy water experiences.